Radiant gas burner



Oct. 14, 1969 I E. BARRIE 3, 02,

RADIANT GAS BURNER Filed Oct. 18. 1967 finiin i I III" II I UnitedStates Patent Tee RADIANT GAS BURNER Eric Barrie, 25 Bunarba Road,Gymea, New South Wales, Australia Filed Oct. 18, 1967, Ser. No. 676,281Claims priority, application Australia, Oct. 21, 1966, 12,926/66 Int.Cl. F2311 13/14 US. Cl. 431-329 1 Claim ABSTRACT OF THE DISCLOSURE Thisinvention relates to improvements in gas burners particularly of thetype used for grilling food. With these types of burners it is desirableto design the shape of the burner so that an unnecessary amount of heatwill not be concentrated in the centre portion of such burner. Thisproblem arises because the burner is approximately 100 square inches inarea and a considerable quantity of heat is generated towards the centreof such burner which can lead to uneven grilling.

In one type of griller burner now in use the central portion of theburner is blanked off and the air/ gas mixture is preferentiallyadmitted to the marginal portion of the burner. This arrangement causesincomplete secondary combustion and also localises the escape path ofthe combustion gases and may cause interference with other adjacentcooking operations.

Accordingly, the object of the present invention is to provide a gasburner of the grilling type which has reasonably even heat output overthe whole area of the burner.

In accordance with the present invention this is provided a gas burnerof the griller type comprising first and second shell members joinedtogether around their perimeters, an aperture extending through bothshell members and the portions of the shell members thereabout beingjoined together to form two compartments in the burner, an air/ gasinlet to the burner, each compartment having in the second shell memberan opening covered by a refractory member so that the air/ gas mixtureentering the burner when ignited after passing through the compartmentsburns on the surface of the refractory member and at least some of theproducts of combustion pass up through the aperture in the burner.

The invention is described by Way of example with reference to theaccompanying drawings in which:

FIGURE 1 is a partially cut away plan view of the burner of theinvention, and

FIGURE 2 is a partially sectioned front elevation of the burner ofFIGURE 1.

In a preferred construction the burner comprises substantially flatfirst and second shell members 11 and 12 having marginal peripheralflange portions 13 and 14 so that one shell member may be secured to theother around such flange portions, for example, by means of a lock seamjoint 15. A central aperture 16 is provided in each shell member 11 and12 and each has a flange portion 17 and 18 thereabout so that the shellportions 11 and 3,472,602 Patented Oct. 14, 1969 12 may be also joinedtogether by a lock seam joint 19 thereby around the aperture in thecompleted burner shell. The thickness of the burner shell as assembledmay increase from the perimeter 15 towards the aperture 16 and in thepreferred construction being described the aperture forms twocompartments 29 and 21, one on each side of the aperture andinter-connected to each other around the ends of the aperture 16 whichis elongated in plan.

At one side of the burner adjacent an end of the aperture there isprovided a flared out open inlet portion 22 to which is mounted theusual air mixing and connecting devices 23 required in a gas burner. Asthe gas air mixture passes into the burner it is deflected into thecompartments 20 and 21 by a baflle 30 which, in side elevation, that is,a direction parallel to but transverse to the longitudinal axis of theaperture, is V shaped and extends from one shell member 11 to the othershell member 12 of the burner with the apex closest the wall of theaperture 16.

'Each compartment 20 and 21 is provided with an opening or gas outlet inthe second shell member 12 which is of-such size as to extend towardsthe marginal portions 14 and the aperture 16. Each gas opening has amarginal flange 24 and 25 for mounting thereon a gauze or otherrefractory member 26 and 27 so that the gas air mixture after passingthrough the compartments 20 and 21 of the burner passes through suchrefractory or gauze 26 and 27 and is ignited on the outer surfacethereof. The flanges 24 and 25 for mounting the refractory member varyin extent because of the varying thickness of the burner.

The burner may be provided with mounting flanges 28 and 29 so that itcan be readily mounted, refractory member downwards in the grillerassembly.

I claim:

1. A gas burner of the griller type comprising first and second shellmembers each having an elongated aperture and having marginal flangesaround the perimeter of the shell and around the aperture, the marginalflanges around each shell member being secured together and the marginalflanges around the apertures being joined together with the flangesbeing sized so the spacing between the shell members increases from theperimeter towards the aperture, a compartment on each side of theelongated aperture, said compartments being joined at each end of theaperture, an air/gas inlet to the burner in general alignment with theaperture at one end of the aperture whereby incoming air/ gas mixtureflows laterally to reach the two compartments, each compartment havingin the second shell member an opening surrounded by a flange, arefractory member secured to the latter flange so that the air/gasmixture entering the burner passes into the compartments and burns onthe surface of the refractory members and some of the products ofcombustion pass up through the aperture in the burner.

References Cited UNITED STATES PATENTS FREDERICK L. MATTESON, JR.,Primary Examiner H. B. RAMEY, Assistant Examiner

